| Abstract [eng] |
Oscillating mechatronic devices are widely used for different purposes (in piston compressors, linear actuators, valve drives, artificial heart and other). The investigations are done in Lithuania and abroad. One of the main investigated problems is related to the research of the control systems of the displacement amplitude of oscillations with the indirect estimations of the displacement amplitude of oscillations. The indirect estimation is performed by using the spectrum information of the device. Also there are few investigations in the area of the diagnostics of the device. The aim of work – to investigate the work regimes, mover’s oscillation displacement amplitude estimation and control aspects, diagnostics aspects of two-mass oscillating mechatronic device by using oscillation displacement’s and current’s spectrum informative parameters. The doctoral dissertation work is dedicated to research and development of oscillating mechatronic devices analytical analysis, control system and diagnostics of the devices. The mathematical relationships between amplitudes of first harmonics’ of displacement of oscillations and total current and between the oscillation center shift and DC component of total current. The control algorithm with the indirect estimation of the displacement amplitude of oscillation was created considering the derived relationships. The composed mathematical model and structures of the device are presented. The sets of the faults and their indications were composed considering the total current information. During the experiment the parameters of the device were defined, the work characteristics were composed and the relationships between spectrum components’ amplitudes of displacement of oscillations and total current were confirmed. Also the relevance of the mathematical model was verified. The results of the work augment the research results of the devices and is suitable both for the non-excited and excited devices. |
